Joshua Howard created SPARK-23784:
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Summary: Cannot use custom Aggregator with groupBy/agg
Key: SPARK-23784
URL: https://issues.apache.org/jira/browse/SPARK-23784
Project: Spark
Issue Type: Bug
Components: Project Infra
Affects Versions: 2.3.0
Reporter: Joshua Howard
{{I have code
[here|[https://stackoverflow.com/questions/49440766/trouble-getting-spark-aggregators-to-work],]
where I am trying to use an Aggregator with both the `select` and `agg`
functions. I cannot seem to get this to work in Spark 2.3.0.
[Here|https://docs.cloud.databricks.com/docs/spark/1.6/examples/Dataset%20Aggregator.html]
is a blog post that appears to be using this functionality in Spark 1.6, but
It appears to no longer work. }}
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